The Opportunity Drawing confirmation email is a system-generated email for an initiative.  As a result, it cannot be modified.  It is a hard coded default email with the following information:

[Date, Time (PT)]

Order #: [Order Number]

[First Name], [Last Name]
[Company Name]
[Address Line 1]
[City, State, Zip]

Thank you for your raffle purchase.

Username: [Username]
Do you not know your password? [Password Reset link]

The following summarizes your order:
(Name of the Order, Description, Quantity, Price, and Total columns and information)

Your Numbers: [raffle ticket number]